If a player who has left the game would begin a turn, that turn doesn’t begin.
May 3, 2019 · War of the Spark
When a player leaves the game, any continuous effects with durations that last until that player’s next turn or until a specific point in that turn will last until that turn would have begun. They neither expire immediately nor last indefinitely.
January 25, 2019 · Ravnica Allegiance
When a player leaves the game, any continuous effects with durations that last until that player's next turn or until a specific point in that turn will last until that turn would have begun. They neither expire immediately nor last indefinitely.
June 5, 2017 · Commander Anthology
When a player leaves the game, any continuous effects with durations that last until that player’s next turn or until a specific point in that turn will last until that turn would have begun. They neither expire immediately nor last indefinitely.
July 22, 2016 · Eldritch Moon
When a player leaves the game, objects that player owns in the ante zone do not leave the game. This is an exception to rule 800.4a. See rule 407, “Ante.”
February 1, 2014 · Born of the Gods
In a Planechase game, if the player designated as the planar controller would leave the game, instead the next player in turn order that wouldn’t leave the game becomes the planar controller, then the old planar controller leaves the game. See rule 309.5.
May 1, 2012 · Avacyn Restored
In a Planechase game, if the player designated as the planar controller would leave the game, instead the next player in turn order that wouldn't leave the game becomes the planar controller, then the old planar controller leaves the game. See rule 309.5.